Improvement in rotary pumps



aaa sata aan esta JOHN DOYLE, OE EOBOKEN, NEW JERSEY, AND, TIMOTHY AUG i MARTIN, OE NEW YORK, N. Y.

f Letters Patent No. 109,117, dated November 8, 1870.

IMPROVEMENT IN lROTARY PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

l rlo all whom it may concern:

Be it known that we, JOHN DOYLE, of Hoboken, in the county of .Hudson and State' of New Jersey, and TIMOTHY AUGUSTINE MARTIN, of the city, county, and State of New York, have invented a new and improved Rotary Pump; and we do heleby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this speciication.

' This inventionv has ior its object `the obtaining' the line g/Jy, iig. 1.

Similar letters of reference indicate corresponding parts.

A represents an annular tubewhich is connected by i'our tubular arms, w a l) b', with a tubular axis, B, the latter being divided by a wedge-shaped parti tion, c, into two parts, G D, the former, O, being the suction, and the latter, 1), the discharge end of the axis.

The arms a a communicate with. the 'suction palt G ofthe axis B, and the arms b b' communicate with the discharge-port ofthe same. l

` The annular tube A is provided with two valve- .chambers E E', placed in the rim or tube at opposite points, and these chambers are provided with valves F, of slightly conical form, and so arranged that, by a partial rotation, the arms aa b b will communicate with and be cut oii from the annulartube A, (see g. 1. r

The annular'tube A is provided with a certain quantity of mercury, G, or other suitable fluid or semi-fluid. Mercury, however, will probably be preferable. t

This mercury, owing to its gravity, will remain at the lower part oi' theannular tube, while'the latter rotates, as shown infig. 41. y V The valve-chambers E E extend entirely across the annular tube A, and the valves F, when open, do not form any obstruction within said tube.

These valves may be'desoribed as being cones, hav.- ing sections removed at two opposite sides, to form planesurfaces, either of which, when turned or adjusted in line with the annular tube, leave the latter open its entireI width;

Thiswill be fully understood by referring to iig. 1, in which one valve is shown open and the other closed.

The mercury G performs the function of a stationary piston, it being understood that the tube A re' volves;

The valves F are opened and closed by means of a stationary cam, H, which is attached to the framing l, in which the axis B is hung, the valves being each provided at one end with an arm, e, to which arms rods fare. connected, thc outer ends ot' the latter being provided with friction-rollers g, which work-in the cam H, (see both tigures.) l

This ca'm H may be described as being composed of two circular portions h 7i., or rather semicircular portions, concentric with each other, and connected at their endsl by short oblique portions t' t, as shown in fig. 1.

The operation, which is extremely simple, is as fol?` lows:

Suppose the annular tube a to be rotating iu thc 'direction indicated by the arrows, iig. 1, the mercury, as before stated, being stationary, a suction will be formed in the tube A, between the end ofthe mercury and the upper valve, as indicated by 1 1 1, and water-or other fluid being. acted upop will be drawn up into the suction part C of the axis B, up through Y the arma, and into the portion of the annular tube 1 1 1, as indicated by the arrows; at the same time the water in the other portion ofthe tube, which was previousl y raised, is forced down the arm l), into and outof the discharge part D of the axis B, the lower valve closing the arms a' b.

llhe valves are operated, opened, and closed by thel passing of the friction-rollers of the rods f ot' the valves, through the oblique portions i, into the portions h h ofthe cam; said oblique portions causing a gradual opening and closing of the valves, and heingso disposed or placed as to cause one valve to open slightly in advance of the other closing, to insure a continuous operation of the pump.

It will be understood that when the valves F close the arms a, b and a b', the annular tube A is unobstructed, (see the lower valve in fig. 1,) and when said arms are open, as shown by the upper valve in same figure, the tubeA is obstructed, the valves forming a partition across the tube.

Having thus described our invention,

What we claim as new,- and desire to secure by Letters Patent, is`

The annular rotating tube A, provided with valves F, in combination with mercury G or any suitable fluid or semi-duid placed within the annular tube, and all arranged to operate in the manner substantially as and for the purpose set forth.

JOHN- DOYLE. TIMOTHY .AUGUSTIN E MARTIN.

' Witnesses:

A. It. HAIGHT,

1).,1). OOLcocK.

USTIN E 

